Enjoy Zod for the time being
General Zod, the last of the core DLC line-up for Injustice: Gods Among Us, is available for download as of today. He joins Batgirl, Lobo, and Scorpion which, when you run through the list like that, doesn't seem like a whole lot. More roster additions are on the way, thankfully.
When asked if there would be any new DLC character announcements soon, NetherRealm Studios creative director Ed Boon replied with an emphatic "YES!" Perhaps we'll also get to hear more about what's up with the Wii U version of Injustice before too long here.
Any input on where NetherRealm should take future DLC? I'm sure there are plenty of suggestions regarding who not to include.